Motor-controlling mechanism for talking-machines.



A. A. HUSEBY.

MOTOR CONTRQLUNG MECHANISM FOR TALKING MACHINES. Armcmoy HLEI) ml. 6. m1

1340.455. Pat/entedSept. 18,1917.

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I A. AJHUSEBY. mom: cpnmoumc mgcnmism FOR mum; MACHINES.

APPLICATION FlLED APR-9.19!!- 1-.24=0,455. Patented Sept. 18,1917.

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ALBERT A. HUSEBY, OF CHICAGO, ILLINOIS.

MOTOBr-CONTROLLING MECHANISM FOR TALKING-MACHINES.

Specification of Letters Patent.

Patented Sept. 18, 1917.

Application filed Apr1l6, 1917. Serial No. 160,150.

To all whom it may concern:

Be it known that I, ALBERT A. HUsEBY, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Motor-Controll ng Mechanisms for Talking-Machines, of Wh1ch the following is a specification.

This invention relates to motor-controlling mechanisms more especially designed for talking machines, and has reference more particularly to automatic devices for effecting the application and release of the broke through the agency of a movable element of the machine,usually the swinging tonearm. Recent developments in this art have produced a number of devices wherein a springactuated brake is normally held retracted by a latch mechanism, and this latter is unlatched by a latch-tripping mechanism located in the path of movement of the tone-arm and engaged by the latter at the limit of its inward movement in playing a record. Some of these devices are also provided with a brakeretracting and latch resetting device that is struck by the tone-arm when the latter is returned to its starting position.

My present improvements relate to automatic stopping and starting devices of this general character, and the general purpose and aim of the invention is to produce an automatic motor-controlling mechanism that shall be simple and economical to manufacture, see to manipulate, and efiicient, sensitive in reliable in operation. This and other objects and advantages of the inven tion will be apparent to those skilled in the artfrom a consideration of the following detailed description, taken in connection with the accompanying drawings, which show a ractical and approved embodiment of the Invention, and in which-- Figure 1 is a bottom plan view of the mechanism shown as a plied to the underside of the usual meta plate in which the turntable is mounted and from which the motor and its adjuncts are suspended;

Fig. 2 is a top plan View of the mechanism shown in Fig. 1 turned and for end and with the attaching plate of the frame structure cut off to disclose underlying parts;

Fi 3 is a side elevation as viewed from the right of Fig. 1 inverted;

Fi 4: is an end elevation as seen from the left of Fig. 3;

Figs. 5 and 6 are enlarged detail sections on the corresponding lines of Fig. 3, the stationary frame parts appearing in dotted lines for the sake of clearness;

Fig. 7 is an enlarged vertical section on the line 7-7 of Fig. 2.

Referring to the drawings, 10 designates the usual metal plate of a cabinet talking machine in which the turntable is mounted and to the underside of which the motor and its associated parts are secured. As here shown said plate has a rear extension 10' in which is formed an elongated opening 11 that accommodates the swinging movement of the upright portion of the tonecmn indicated in Fig. 1 at 12.

l.o'thc under side of the plate 10 is secured a frame structure which supports the several elements of the mechanism, said frame structure comprising an attaching plate 1.3, a pair of parallel depending L- shapcd arms 14, and a bracket arm 15 ex tending horizontally from one of the arms 14. In and between the arms lei, at the elbows thereof is journaled a rock shaft 16, on one overhanging end of which is a disk 17 (Fig. 4) carrying an eccentric pin 18 that is engaged by the slotted end 19 of a brake-lever 20, said brake-lever being fulcrumed at 21 and carrying at its other end a brake-block 22 that cooperates with the periphery of a brake-disk on the governor shaft of the motor. Fast on the rock shaft 16 is an arm 24 to the free end of which is connected a tensile spring 25 anchored at 26, said sprpig, through the described connections, normally tending to apply the brakeblock 22 to the disk 23.

Keyed to the other overhanging end of the rock shaft 16 is a ratchet disk 27, on the inner face of which is formed a single tooth or shoulder 28 (Figs. 5 and 6). Pivoted on the lower side of the horizontal limb of one of the side frame members 14 is a detent pawl 29, the nose of which is constantly urged against the inner face of the ratchet disk 27 by a spring 30. By referonce to Fig. 5 it will be seen that the tooth 28 has a long gradually inclined side 28 over which the nose of the pawl wipes as the disk is turned in a clockwise direction, viewing Fig. 5, by the brake-retracting mechanism next to be described, until the nose of the pawl snaps over the square end or shoulder 28, thus locking the disk against turning in the reverse direction under the pull of spring 25 until the pawl has been retracted.

On the outer end of bracket arm 15 is pivoted at its elbow a bell-crank'lever, one arm 31 of which extends across the path of travel of the tone arm 12, as shown in Fig. 1, and the other arm 32 of which has a bent end enga 'ng behind.the arm 24 of the rock shaft, asfiiest shown in Fig. 3. From this it will be seen that as the tone-arm is swung outwardly of the record to starting position, it strikes the arm 31 of the bell-crank lever and rocks the shaft 16, against the pull of spring 25, withdrawing the brake 22 and at the same time carrying the ratchet tooth 28'into locking engagement with the detent pawl 29. This position of the arts is maintained during the playing 0 the record; and when the tone-arm reaches the end of the record it strikes a pawl-tripping device next to be described, by which the pawl 29 is retracted and the spring 25 allowed to set the brake.

33 desi nates a rod extending between the horizonta limbs of the side frame members 14, and forming with the rock shaft 16 a slideway upon which is mounted a slide 34. From one end of this slide extends a butler arm 35 carrying at its free end a butler block 36 of felt or like material. 37 designates a push-rod disposed parallel with the rod 33, and having a reduced end 37' which is slidably mounted in one of the arms 14, this reduced end being adapted to strike an upstanding tail-piece 29 of the pawl 29, as best shown in Figs. 5 and 6, to withdraw the pawl from the ratchet. The other end of the pushrod is made tubular for a short distance so as to slidably engage an ad justable mandrel 38 (Fig. 3) carried by the other arm 14. The slide 34 extends over the push-rod 37, as shown in Fig. 7, but has no engagement therewith, and 15 formed with a slot 39 through which project a pair of spaced hinge-lugs or ears 40 on the inner end of a trip-arm 41, said lugs being) slidable along the push rod when pushed y the slide 34. The trip arm 41 has a downwardly bent free end 42 that lies in front of the buffer block 36. A light s ring 43 (Figs. 1 and 7) acts on the hingeugs of the trip arm in such a manner as to normally maintain the depending end 42 of the tri arm spaced slightly away from the utter block 36.

The slide 34 is set to the desired position on the slideway by a manually operated lever 44 (Fig. 1) and a link connection 45 therefrom to a stud on the lower side of the slide 34. This,manually operated slide settin mechanism is identical with that shown and described in my former Patent No. 1,224,547, dated May 1, 1917, to which reference may be had for a full disclosure.

In the operation. the tone arm is set with the needle or stylus at the inner end of the record groove. The slide 34 is then manually moved inward until the free end 42 of the trip arm and the buffer block 36 strike the tone arm. The tone arm is then swung outwardly, retracting the brake and setti the detent mechanism, as already describe tf As the tone arm moves away from the buffer block, the spring 43 acts to set the free end 42 of the trip arm slightly away from the buffer block. When now the tone arm, at the completion of the laying of the record, strikes the end 42 of the trip arm the hinge lugs or ears 40 of the latter bite on and actuate the push rod, thus releasing the detent mechanism and allowing the spring 2.") to set the brake and stop the motor.

Without limiting myself to the specific details shown and described,-

I claim:

1. In a motor-controlling mechanism for talking machines, the combination of a. brake, brake applying and releasing mechanism including a rock shaft and a spring tending to apply said brake through said shaft, a ratchet disk connected to said shaft, a detent pawl, a spring ur ing said pawl into engagement with said d lsk, a push-rod for disen aging said pawl from said disk, and a pus i-rod actuating member l0 atcd in the path of a movable element of ihe n achine.

2. In atm'otor-controlling mechanism for talking -machines, the combination of a brake, brake-applying and releasing IDGC'ltL- nism including a rock shaft and. i sprang tending to apply said brake through mid shaft, a ratchet disk connected to st: id shaft, a detent pawl, a spring urging said p-iwl into engagement with said disk, a push-rod for disengaging said pawl from said disk, a push-rod actuating member operated by a movable element of the machine hen inoving in one direction, and a brake-retracting member actuated by said movable element when moving in the opposite direction.

3. In a motorcontrolling mechanism for talking machines, the combination of a brake, brake-applying and releasing mechanism including'a rock shaft and a sprin tending to apply said brake through sai shaft, a ratchet disk connected to said shaft, a detent pawl, a spring urging said pawl into engagement with said disk, :1 push-rod for disengaging said pawl from said disk, and a triparm slidably mounted at one end on said push-rod so as to be adjustable lenigthwise of the latter and having its free en disposed in the path of a movable element of the machine.

4. In a motor-controlling mechanism for talking machines, the combination of a brake, brake applying and releasing mechanism including a rock shaft and,a spring tending to apply said brake throuzh said shaft, a ratchet disk connected to said shaft, a detent pawl, a sprin; urging said pawl into engagement with said dish, a push-rod for discnnaginn said pawl from said disk, a trip-arm slidahly mounted at one end on said pnslrrod so as to he adjustable lengthwise of the latter and at its free end adapted to be contacted by a movable element of the machine when moving in one direction, an arm on said rock shalt to which one end of said hrakwipnlying spring is connected, and a hell-crank lever having one arm thereof engaging said rock shaft arm and its other arm adapted to be contacted by said movable element when moving in the opposite direction 5. In a motor-eontrolling mechanism for talking: machines, the combination of a. frame structure, a rock shaft journaled in said frame structure. a brake lever at one end connected to and act hated by said rock shaft and eairvinn a hraliedilock at its other end, an arm on said shaft, a spring connected to said arm and tending to apply said hraloe-hloclc. a ratchet dish i'aston said shaft, a detent pawl, a spring urging said pawl into engagement with said dish, a pnshrod supported by said frame structure parallel vith said shaft for disengaging said pawl from said disk, and a triparm slidably mounted at one end on said push-rial so as to he adjustahlo lengthwise of the latter and having its free end disposed in the path of a movable element of the machine.

6. In a motor-controlling mechanism for talking machines, the combination of a frame structure having parallel side members, a rock shaft jonrnaled in and between said side members. a hrakedever at one end connected to and actuated by said rock shaft and carrying a hrakediloek at its other end, a spring tending to apply said brake-block a ratchet disk fast on said. shaft, a detent pawl. a sprinv urging said pawl into engagement with said dish, a rod connecting said side frame members parallel with said shaft and forming with the latter a slideway. a slide on said slideway having a pro jet-ting huli'er arm, a buffer-block carried by the free end of said trailer-arm, a push rod supported by and between said side frame nienihers parallel with said slideway, and a triparm slidablv mounted at one end on said push-rod and actuated lengthwise of the latter by said slide, said trip-arm resting upon said heifer arm and having a down turned free end lying slightly in advance of said lnii'l'er-blocli.

7 In a motoncontrolling mechanism for talking machines, the combination of a frame structure havin" parallel, side members, a rock shaft journaled in and between said side members, a brake lever at one end connected to and actuated by said rock shaft and carrying a brake lock at its other end, a spring tending to apply said brake-block, a ratchet disk fast on said shaft, a detent pawl pivoted on one of said side frame members, a spring urging said pawl into engagement with said dish, a rod connecting said side frame members parallel with said shaft and forming with the latter a slideway, a slide on said slideway having a rigid projecting: butler arm, a buffer-block car ried by the free end of said bufi'er arm, a. push-rod. supported by and between said side frame members parallel with said slideway, a triparm formed at one end With a pair of separated down turned lugs slidahly mounted on said push-rod and actuated lengthwise oi. the latter by said slide, said trip-arm resting, upon said hniler arm and having a. down turned end lying alongside said buffer-blade and a spring; engaging said trip-arm in a manner to maintain its free end normallv slightly spaced from said buffer-block.

ALBERT A. HUSEBY. 

